Journal of the Nigerian Society of Physical Sciences最新文献_第7页

Collocation Method for the Numerical Solution of Multi-Order Fractional Differential Equations 多阶分数阶微分方程数值解的配点法

Journal of the Nigerian Society of Physical Sciences Pub Date : 2023-06-04 DOI: 10.46481/jnsps.2023.1075

G. Aji̇leye, A. James

引用次数: 0

Numerical Analysis of Fractional-Order Dynamic Dengue Disease Epidemic in Sudan 苏丹分数阶登革热动态流行的数值分析

Journal of the Nigerian Society of Physical Sciences Pub Date : 2023-05-28 DOI: 10.46481/jnsps.2023.1464

Fathelrhman EL Guma, O. Badawy, Mohammed Berir, Mohamed A. Abdoon

{"title":"Numerical Analysis of Fractional-Order Dynamic Dengue Disease Epidemic in Sudan","authors":"Fathelrhman EL Guma, O. Badawy, Mohammed Berir, Mohamed A. Abdoon","doi":"10.46481/jnsps.2023.1464","DOIUrl":"https://doi.org/10.46481/jnsps.2023.1464","url":null,"abstract":"The main idea of this work is numerical simulation and stability analysis for the fractional-order dynamics of the dengue disease outbreak in Sudan. This research uses a computer technique based on the Adams-Bashforth approach to numerically resolve a fractional-order dengue epidemic in Sudan. Analyses of numerical and dynamic stability show that the fractional-order dengue fever model is sensitive to initial conditions for those parameters. Therefore, the parameters’ values are critical in establishing how many individuals will get better from their sickness and how many will become ill. The proposed method is effective in providing an illustration of the solution’s dynamics over a very long horizon of time, which is crucial for making accurate predictions about the spread of dengue in Sudan. In addition, this method can be utilized to assess the efficacy of various intervention strategies and inform public health policies aimed at reducing the burden of dengue fever in Sudan. It can also assist in identifying areas most susceptible to dengue infestations and prioritizing disease control resources.","PeriodicalId":342917,"journal":{"name":"Journal of the Nigerian Society of Physical Sciences","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128979468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Non-Intrusive Load Monitoring (NILM), Interests and Applications 非侵入式负载监测(NILM)，兴趣和应用

Journal of the Nigerian Society of Physical Sciences Pub Date : 2023-05-27 DOI: 10.46481/jnsps.2023.1208

Leonce W. Tokam, S. Ouro-Djobo

{"title":"Non-Intrusive Load Monitoring (NILM), Interests and Applications","authors":"Leonce W. Tokam, S. Ouro-Djobo","doi":"10.46481/jnsps.2023.1208","DOIUrl":"https://doi.org/10.46481/jnsps.2023.1208","url":null,"abstract":"In developing effective energy management mechanisms, new concepts have been developed to provide new approaches. Non-intrusive load monitoring (NILM) is an approach that was originally developed to allow the occupants of a room to identify the contribution of each appliance to the total electricity consumption of the room through a single point measurement device. The aim is to provide customers with information that will enable them to act as `` ` consum'actors\", i.e., people who undertake to change their electricity consumption habits for an objective cause. The progress of artificial intelligence in its various forms (machine learning, big data, internet of things) have greatly contributed to increase the interest of NILM among researchers in different fields. Indeed, some of them are adapting this concept to research areas such as water, transport, health, the environment and agriculture. In this context, applications in these fields have been developed to show the potential and benefits of using this approach. In addition to presenting non-intrusive load monitoring (NILM) in its general framework, this article presents the interests and applications of this approach in various fields.","PeriodicalId":342917,"journal":{"name":"Journal of the Nigerian Society of Physical Sciences","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126079364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Approximate solution of space fractional order diffusion equations by Gegenbauer collocation and compact finite difference scheme 空间分数阶扩散方程的Gegenbauer配置和紧致有限差分格式近似解

Journal of the Nigerian Society of Physical Sciences Pub Date : 2023-05-22 DOI: 10.46481/jnsps.2023.1368

K. Issa, Steven Ademola Olorunnisola, T. Aliu, Adeshola Adeniran Dauda

引用次数: 0

Pre-functions and Extended pre-functions of Complex Variables 复变量的预函数与扩展预函数

Journal of the Nigerian Society of Physical Sciences Pub Date : 2023-05-21 DOI: 10.46481/jnsps.2023.1427

Thirumalai A, Muthunagai K, R. Agarwal

引用次数: 0

Evaluation of ANFIS Predictive Ability Using Computed Sediment from Gullies and Dam 利用沟坝泥沙计算评价ANFIS预测能力

Journal of the Nigerian Society of Physical Sciences Pub Date : 2023-05-21 DOI: 10.46481/jnsps.2023.1028

S. O. Oladosu, Alfred S. Alademomi, James Bolarinwa Olaleye, Joseph Olalekan Olusina, Tosin J. Salami

{"title":"Evaluation of ANFIS Predictive Ability Using Computed Sediment from Gullies and Dam","authors":"S. O. Oladosu, Alfred S. Alademomi, James Bolarinwa Olaleye, Joseph Olalekan Olusina, Tosin J. Salami","doi":"10.46481/jnsps.2023.1028","DOIUrl":"https://doi.org/10.46481/jnsps.2023.1028","url":null,"abstract":"The study proposed an Adaptive Neuro-Fuzzy Inference Systems (ANFIS) model capable of predicting sediment deposited in a dam and sediment loss-in-transit (SLIT) using the potential of a formulated mathematical relation. The input parameters consist of five members viz: the rainfall, the slope, the particle size, the velocity, and the computed total volume of sediment exited from two prominent gullies for 2017, 2018, and 2019. The outputs are the total volume of sediment deposited at the adjoining Ikpoba dam for 2017, 2018, and 2019, respectively. The Ordinary Least Square (OLS) regression model on sediment volume retained all covariates with p<0.05, explaining 93.8% of the variability in the dataset. The multicollinearity effect on the dataset was assessed using the Variance Inflation Factor (VIF) which was found not to pose a problem for (VIF<5). The model was validated using the (MSE), the (MAE), and the correlation coefficient (r). The best prediction was obtained as: (RMSE = 0.0423; R2 = 0.947). The predicted volume of sediment was 842,895.8547m3 with an error of -0.3295344% and the predicted volume of SLIT was 57,787.98m3 which is an indication that ANFIS performs satisfactorily in predicting sediment volume for the gullies and the dam respectively","PeriodicalId":342917,"journal":{"name":"Journal of the Nigerian Society of Physical Sciences","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121153346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Generation of Electricity From a Hydraulic Turbine in the Djonou River (Benin) Djonou河水轮机发电(贝宁)

Journal of the Nigerian Society of Physical Sciences Pub Date : 2023-05-21 DOI: 10.46481/jnsps.2023.1263

Mahouton Justine Carine Adjassa, G. Koto N’Gobi, H. Donnou, C. Kouchadé, B. Kounouhewa

{"title":"Generation of Electricity From a Hydraulic Turbine in the Djonou River (Benin)","authors":"Mahouton Justine Carine Adjassa, G. Koto N’Gobi, H. Donnou, C. Kouchadé, B. Kounouhewa","doi":"10.46481/jnsps.2023.1263","DOIUrl":"https://doi.org/10.46481/jnsps.2023.1263","url":null,"abstract":"The shortage of electricity in rural areas despite the hydraulic potential they possess is becoming a challenge for Benin. To date, nearly 140,000 people spread over the 42 lakeside villages of this country live in energy inaccessibility, insecurity and poverty. To overcome this situation, the present study is therefore interested in the production of electrical energy on an experimental basis in low water periods thanks to an Archimedean screw turbine which operates at low flow rates and height of fall on the river. Djonou located in southern Benin a few kilometers from the University of Abomey-Calavi. The geometrical and hydraulic parameters of the screw were therefore determined and the device was modeled using Autocard software. A prototype was then made with local recycled materials and tested on the river. The screw specifications indicate an inside and outside radius of 0.072 m and 0.135 m. The length of the screw was set at 0.46 m for a blade radius estimated at 0.137 m. The number of screw blades is equal to 2 with a flow rate of 0.049 $ m^{3}/s $. The inclination angle of the screw is $25^{circ}$. The device on the experimental site produces a voltage of 16 V and provides a current of about 0.12 A which can power a 2 W lamp. This performance of the prototype made on a small scale is a reliable indicator of the optimal use of this technology in the national hydraulic network of Benin to supply populations with electrical energy.","PeriodicalId":342917,"journal":{"name":"Journal of the Nigerian Society of Physical Sciences","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131434531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical Study on 10C Elastic Scattering Cross Sections Using Different Cluster Density Distributions and Different Potentials 不同簇密度分布和不同电位下10C弹性散射截面的理论研究

Journal of the Nigerian Society of Physical Sciences Pub Date : 2023-05-21 DOI: 10.46481/jnsps.2023.1392

S. Olorunfunmi, A. Bahini, A. Olatinwo

{"title":"Theoretical Study on 10C Elastic Scattering Cross Sections Using Different Cluster Density Distributions and Different Potentials","authors":"S. Olorunfunmi, A. Bahini, A. Olatinwo","doi":"10.46481/jnsps.2023.1392","DOIUrl":"https://doi.org/10.46481/jnsps.2023.1392","url":null,"abstract":"Elastic scattering cross sections are a fundamental aspect of nuclear physics research, and studying the cross sections of various nuclei can provide important insights into the behavior of nuclei. In this study, the elastic scattering cross sections of 10C projectile by 27Al, 58Ni, and 208Pb target nuclei are analyzed. The aim of this study is to investigate the cluster structure of 10C and the sensitivity of the elastic scattering cross sections to different potentials. To achieve this objective, the double folding optical model and a simple cluster approach are used to analyze the cross sections. The real part of the optical potential is obtained by folding two different effective interactions, Michigan-3-Yukawa (M3Y) and JeukenneLejeune-Mahaux (JLM), with four different cluster density distributions of the 10C nucleus: 6Be + alpha, 9B + p, 8Be + p + p, and alpha + alpha + p + p. The imaginary part is taken to be a Woods-Saxon phenomenological form. The sensitivity of the elastic scattering cross sections to different potentials is assessed by comparing the results obtained using different potentials. The cluster structure of 10C is validated by comparing the theoretical results with experimental data. The results show that the cross sections are sensitive to the choice of potential used and that the cluster structure of 10C is validated. The theoretical results show reasonable agreement with the experimental data.","PeriodicalId":342917,"journal":{"name":"Journal of the Nigerian Society of Physical Sciences","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114966276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal instability of rotating Jeffrey nanofluids in porous media with variable gravity 变重力多孔介质中旋转Jeffrey纳米流体的热不稳定性

Journal of the Nigerian Society of Physical Sciences Pub Date : 2023-05-20 DOI: 10.46481/jnsps.2023.1366

Pushap Lata Sharma, Deepak Bains, Pankaj Thakur

引用次数: 1

Study of the passivation of defects in the perovskite cell: application to Sahelian climate conditions 钙钛矿电池中缺陷钝化的研究:在萨赫勒气候条件下的应用

Journal of the Nigerian Society of Physical Sciences Pub Date : 2023-05-14 DOI: 10.46481/jnsps.2023.1250

Essodossomondom Anate, N. Kata, H. Samah, A. S. Maiga

{"title":"Study of the passivation of defects in the perovskite cell: application to Sahelian climate conditions","authors":"Essodossomondom Anate, N. Kata, H. Samah, A. S. Maiga","doi":"10.46481/jnsps.2023.1250","DOIUrl":"https://doi.org/10.46481/jnsps.2023.1250","url":null,"abstract":"This article is devoted to the study of the performance of the photovoltaic cell based on perovskite (MAPbI3) in real conditions of sub-Saharan Africa. A model of this cell has been made taking into account the integration of defects at the interfaces. After a study of the sensitivity of these defects, a passivation layer was introduced at the interface to improve the performance of the cell. The influence of temperature and irradiance on the performance of perovskite cells was studied on the one hand with defects at the interfaces and on the other hand with the integration of a passivation layer of defects. The results show a decrease of the performance ratio for the non-passivated cell due to the defects present at the interfaces of the said cell. The models developed under SCAPS-1D were validated by applying it to a real module found in the literature under the same conditions. The performance calculation shows a satisfactory qualitative and quantitative agreement. The results relative to the performance ratios obtained for the simulated models show that perovskite is on the right track for a potential future candidacy to the most suitable technologies for sub-Saharan Africa.","PeriodicalId":342917,"journal":{"name":"Journal of the Nigerian Society of Physical Sciences","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123613530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0